0 pins are on the high power RF circuit board.Input RF type Switch, SPDT of the Evaluation board.Using the HMC547 search parameter, you can discover variants of the RF Board.
EV1HMC547ALP3 Features
0 pins Switch, SPDT Type
EV1HMC547ALP3 Applications
There are a lot of Analog Devices Inc. EV1HMC547ALP3 RF Boards applications.